[PATCH 2/2] Revert "winegstreamer: Remove redundant null check before g_error_free."

[Alex Henrie]

Cc: Andrew Eikum <aeikum at codeweavers.com>

This reverts commit 976ccb92ea745d8a79a2d0a25d37268bb4dc62a6.

This is what I get for not reading the documentation...if you call
g_error_free(NULL), it prints a nasty error message, which I am now
getting frequently:
https://developer.gnome.org/glib/stable/glib-Warnings-and-Assertions.html#g-return-if-fail

I'm going to stop trying to clean up winegstreamer; I'm not any closer
to resolving bug 29920 and I'm just making mistakes.

Signed-off-by: Alex Henrie <alexhenrie24 at gmail.com>
---
 dlls/winegstreamer/gstdemux.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/winegstreamer/gstdemux.c b/dlls/winegstreamer/gstdemux.c
index c15d913..ab80167 100644
--- a/dlls/winegstreamer/gstdemux.c
+++ b/dlls/winegstreamer/gstdemux.c
@@ -1088,7 +1088,8 @@ static GstBusSyncReply watch_bus(GstBus *bus, GstMessage *msg, gpointer data)
         WARN("%s: %s\n", GST_OBJECT_NAME(msg->src), err->message);
         WARN("%s\n", dbg_info);
     }
-    g_error_free(err);
+    if (err)
+        g_error_free(err);
     g_free(dbg_info);
     return GST_BUS_DROP;
 }
-- 
2.10.2